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Chusa Tuff

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Journal Article
Journal: AAPG Bulletin
Published: 01 December 1939
AAPG Bulletin (1939) 23 (12): 1873–1874.
... limestone overlies the La Chusa tuffs. These clays are distinctly different from Catahoula deposits, and are referred to the Oakville formation, due to their lithologic character and position in section. The Catahoula and Oakville are overlapped by Lissie or post-Pleistocene conglomerate throughout north...
Journal Article
Journal: AAPG Bulletin
Published: 01 August 1935
AAPG Bulletin (1935) 19 (8): 1131–1147.
... of the maps, the surface and subsurface structure of the North pool may be seen to conform very closely. The formations cropping out within the area of the field and immediately adjacent comprise the upper two members of the Catahoula Tuff, of Miocene age. The uppermost, or Chusa, series consists...
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Journal Article
Journal: AAPG Bulletin
Published: 01 March 1932
AAPG Bulletin (1932) 16 (3): 259–260.
... clays and “reworked tuffs” of the upper Gueydan, Chusa member, especially in Karnes and Gonzales counties, are lithologically quite similar to certain parts of the Fleming clay of East Texas, and a part of the Fleming may possibly be included in my Gueydan in addition to the Catahoula formation. I...
Journal Article
Journal: AAPG Bulletin
Published: 01 February 1940
AAPG Bulletin (1940) 24 (2): 376–382.
....” Bailey’s Frio is that of the present geologic map of Texas. The upper portion or ash beds of Dumble’s Frio is called Gueydan and the essential equivalence with the Catahoula, by lateral gradation, is recognized. From the base upward, the Gueydan was subdivided into the Fant, Soledad, and Chusa. 1931...
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1975
AAPG Bulletin (1975) 59 (5): 766–779.
...- to coarse-grained; contains clay pebbles, silt, clay, and calcite cement. Combined Oakville-Fleming thickness is about 300 ft (90 m) in Karnes County. *Catahoula Tuff: Chusa Tuff Member —Claystone, pink, calcareous, tuffaceous, montmorillonitic; and a basal sandy conglomerate containing pebbles...
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Journal Article
Journal: AAPG Bulletin
Published: 01 March 1935
AAPG Bulletin (1935) 19 (3): 378–400.
.... An explanation of the theories expressed by this diagram is that the Chusa tuffs become progressively more argillaceous down dip with concomitant thickening of the beds to account for an increase from approximately 200 feet at the outcrop to the 2,810 feet of its probable equivalent, the Lower Fleming or Upper...
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Journal Article
Journal: AAPG Bulletin
Published: 01 June 1978
AAPG Bulletin (1978) 62 (6): 1049–1062.
... uranium deposits ( Eargle et al, 1975 ) are (1) Goliad Sand (Pliocene); (2) Oakville Sandstone (Miocene); (3) Catahoula Tuff (Miocene), which includes Chusa Tuff Member, Soledad Volcanic Conglomerate Member, and Fant Tuff Member; (4) Frio Clay (Oligocene?); and (5) Whitsett Formation (of Eocene Jackson...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 1966
AAPG Bulletin (1966) 50 (11): 2344–2365.
...); tuffaceous sandy clay overlies the loose sandstone. The loose sandstone is correlated tentatively with the Soledad Volcanic Conglomerate Member of the Catahoula Tuff in Texas ( Deussen and Owen, 1939 , Fig. 3 ). The overlying tuffaceous beds may be the equivalent of the Chusa Tuff Member of Bailey (1926...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 1941
AAPG Bulletin (1941) 25 (11): 1967–2009.
...; the Soledad volcanic conglomerate, sandstone, and tuff or middle Gueydan; and the Chusa argillaceous tuff and tuffaceous clay or upper Gueydan. Bailey 23 placed a somewhat different interpretation on the “Frio formation” than that in usage by any previous writer. In Bailey’s definition, the Frio formation...
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